#include <iostream>

inline double square(double x) { return x * x; }

int main()
{
	using namespace std;

	double a;
	double b;
	double c = 13.0;

	a = square(5.0);
	b = square(4.5 + 7.5);
	cout << "a = " << a << ", b = " << b << "\n";
	cout << "c = " << c;

	cout << ", c squared = " << square(c++) << endl;

	cout << "Now c = " << c << endl;
	
	return 0;
}
